Machine for reducing the width of window-shades and rollers.



V PATENTED MAR. 24, 1903.

@L' BRADFORD. MACHINE FOR REDUCING THE WIDTH OF WINDOW SHADES AND ROLLERS.

APPLICATION FILED AUG. 2, 1902.

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PATENTED MAR. 24, 1903.

J. BRADFORD. I MACHINE FOR REDUCING THE WIDTH 0F WINDOW SHADES AND ROLLERS.

APPLICATIORPILED AUG. 2, 1902.

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,anoeutoz a a'rkozwu d cams PmRs c0. PNOTO L 1 UNITED STATES JOHN A. BRADFORD, OF ORIPPLEOREEK, COLORADO.

MACHlNE FOR REDUCING THE WIDTH OF WINDOW-SHADES AND ROLLERS.

SPECIFICATION forming part of Letters Patent No. 723,358, dated March 24, 1903.

Application-filed August 2, 1902- To all whom, it may concern:

Be it known that I, JOHN A. BRADFORD, a citizen of the United States, residing at Crippleereek, in the county of Teller and State of Colorado, have invented certain new and useful Improvements in Machines for Reducing the Width of Window-Shades and Rollers, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to a machine for reducing the width of window-shades and rollers, and has for its object to provide a ma chine for cutting the shades and rollers after the shades have been rolled thereon and which is simple and inexpensive in construction and easy and efiective in operation.

The invention consists in a machine provided with a rotatable frame having cutting means and means for operating the cutting means mounted on the rotatable frame and in the construction, combination, and arrangement of features, as more fully hereinafter described and claimed.

Referring to the drawings, Figure 1 is a front elevation, partly in section; Fig. 2, a rear elevation, partlyin section; Fig. 3, a side elevation, partly in section; Fig. 4, a detail cross-section on line as w of Fig.2 of the cutters and the plate on which they slide Fig. 5, a detail plan view of the train of gears by which the machine is operated, and Fig. 6 a detail of modification of the eutter-operatin g mechanism.

In the drawings, in which like figures of reference denote like parts throughout the several views, 1 represents the main frame of the machine, which comprises a base 2, having vertical standards 3 and 4. The standard 3 is provided with a circular hub 5, having a central opening 6, and on the front face of said hub is secured, by bolts or in any other suitable manner, a circular rack 7, having a central openings, concentric with the opening 6 of the hub 5. V

A rotatable frame 9, mounted on the hub 5, is provided on its rear face with bevel-gear 10, which engages with the bevel-gear 11 on a shaft mounted in the standard 3, said bevelgear 11 being one of a train of gears 11, 12, and 13. A crank-handle14 is attached to the gear 13 to afford means for operating said Serial No. 118,124. (No model.)

train of gears, and thereby operate the machine. A plate 15 is secured to the outer edge of the rotatable frame 9 by screw-bolts 16, having nuts, and said plate 15 is provided with a horizontally-projecting bracket 17,

having a circular opening 18 and an annular groove 19.

20 is a pinion having a hub 21, provided with exterior parallel annular grooves 22 and an interior screw-threaded bore 23, said pinion being rotatably mounted and held in the bracket 17 by means of Babbitt or other suitable metal 24, which fills the annular grooves of the bracket and hub.

A screw-threaded shaft 25 is mounted in the screw-threaded bore 23 of the hub 21 of the pinion 20 and is provided on its inner end with curved odged cutters 26 27, secured thereto'by means of screw-bolts 28, having nuts 29. Said cutters being of different lengths and located in an opening 28* in the plate 15 and projecting laterally beyond said opening on each side and over the said plate, as at 30, are thereby guided in their movements. The cutter 26, designed for cutting the shade-roller, projects farther toward the center than the cutter 27 for cutting the window-shade, so that While the cutter 26 severs the roller the cutter 27 will cut the windowshade, and thereby the pole is severed and the shade cut simultaneously. 7

31 represents a clamping device for securely holding a roller and the shade rolled thereon While being operated upon by the cutters and which consists of a shaft 32, having a central collar 33, mounted in a bracket 34, projecting laterally inward from the standard 4, said shaft having oppositely-inclined screw-threads at its opposite ends.

35 and 36 are clamping-jaws provided with interiorly-screw-tlireaded sleeves 37 which engage and are adapted to be adjusted on the screw-threads of the shaft 32 for the purpose of compensating for rollers of varying circumferences.

38 is a hand-wheel for operating the shaft 32.

Guide-rods 39 pass loosely through the rear ends of the clamping-jaws 35 and 36 and serve to guide said jaws and keep them in alinement.

40 represents screw-nuts on the upper end of the guide-rods 39.

In the modification Fig. 6, 45 is a screwt'nreaded sleeve having a pinion 46 on its lower end, which engages with the circular rack 7, said sleeve being journaled in a circular opening 47 in the bracket 17, projecting from the plate 15 and supported thereon by a collar 49, screwed to said sleeve by screws 50. The screw threaded shaft 25, which carries the knives 26 and 27 on its lower end, is located in the screw-threaded sleeve 45 and is operated by the revolution of said sleeve in one direct-ion to advance the knives toward the roller and shade to cut the same and by the revolution of said sleeve in the reverse direction to retract the knives.

The operation of the machine is as follows: The roller and the shade thereon which are to be reduced are placed between the jaws of the clamps and adjusted to the desired position under the cutters. The shaft 32 is then operated by the hand-wheel 38, which causes the clamping-jaws to move toward each other and securely hold the roller and shade between them. The trainof gears is then set in motion by revolving the gear-wheel 13 by means of the crank-handle 14,Which causes the gear-wheel 11 to rotate the rotatable frame 9 and the plate 15, together with the pinion and cutters on said plate, around the rack 7, and by the engagement of the pinion with said rack the shaft 25 will be operated and will feed the cutters gradually inward as they are rotated around the roller and shade until the cutting or the reducing of the roller and shade is completed. The operation of the machine is then reversed by reversing the direction of movement of the gear-wheel 18 until the cutters assume their normal position, when the machine will be in readiness to reduce another roller and shade.

I do not wish to be limited to the precise detail construction as herein shown and described, as the same may be varied somewhat without departing from the spirit of my invention.

Having described my invention, what I claim is- 1. A rotary cutter provided with a rotatable frame having cutting means arranged in different planes, and means for operating the cutting means mounted on said rotatable frame, substantially as described.

2. A rotary cutter provided with a rotatable frame having automatically-operated continnously-feeding cutting means thereon arranged in different planes, substantially as described.

3. A machine for reducing the width of win dow-shades and the length of the rollers thereof provided with a rotatableframe having a slidable shaft provided with cutters arranged in different planes, and means for operating said rotatable frame and cutters simulta neously, substantially as described.

4. A machine for reducing the width of window-shades and the length of the rollers thereof provided with a stationary rack, a rotatable frame having automaticallyslidable cutters, and means for operatively connecting said cutters with said rack, substantially as described.

5. A machine for reducing the width of window-shades and the length of the rollers thereof provided with a clamp, a rotatable frame having slidable cutters thereon arranged in difierent planes,and means for operatingsaid cutters and rotatable frame simultaneously, substantially as described.

6. A machine for reducing thewidth of windew-shades and the length of the rollers thereof provided with a frame having a stationary rack,'a rotatable frame having a pinion operatively connected to said rack, a reciprocating shaft mounted in said pinion, cutters secured to said shaft, and means for operating the rotatable frame, substantially as described.

7. A machine for reducing the width of window-shades and the length of the rollers thereof simultaneously, comprising a stationary frame having mounted thereon a rotatable frame, a stationary rack, and a pinion having a screw-threadedbore, a screw-threaded shaft mounted in said bore, cutters of varying lengths projecting from said shaft, and means for operating the rotatable frame, substantially as described.

8. A machine for reducing the width of window-shades and the length of the rollers thereof, comprising a frame having slidable cutters arranged to cut simultaneously atdifferent depths, substantially as described.

9. A machinefor simultaneously reducing the width of window-shades and the length of the rollers thereof, comprising a frame having cutting means arranged in different planes, and a clamp to hold the rolled shades and rollers, comprising a shaft with a collar mounted in said frame, said shaft having oppositely-inclined screw-threads at opposite ends, and clamping-jaws having sleeves engaging said screw-threads, substantially as described.

10. A machine for'freducing the width of window-shades and the-length of the rollers thereof, comprising a frame having cutters arranged to cut simultaneously at different depths, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN A. BRADFORD.

Witnesses:

A. W-PARKs, 'VASHA W. PARKS. 

